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Finding the Fourth Proportional to 260,048.70, 389,489.85 and 260,048.70

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Solution

The fourth proportional to 260,048.70, 389,489.85 and 260,048.70 is: 389,489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,048.70 : 389,489.85 = 260,048.70 : x
  2. Step 2: Convert to fraction form
    260,048.70/389,489.85 = 260,048.70/x
  3. Step 3: Cross multiply
    260,048.70x = 389,489.85 × 260,048.70
  4. Step 4: Simplify right side
    260,048.70x = 101,286,329,155.70
  5. Step 5: Solve for x
    x = 101,286,329,155.70/260,048.70
  6. Step 6: Final answer
    x = 389,489.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.